.box {
  ul {
    background-color: #ddd;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    width: 33.333%;
    transition: all 1s linear;
    opacity: 0;
    min-width: 300px;
    display: flex;
    li {
      width: 33.333%;
      padding: 10px;
    }
  }
}
